国人膝关节参数对假体设计的意义  

Significance of knee joint parameters in prosthesis design

作　　者：张博[1] 潘江[1] 林源[1] 王进军[1] 张晓冬[1] 王志为[1] 任世祥[1] 陈彤[1] 曲铁兵[1] 

机构地区：[1]首都医科大学附属北京朝阳医院骨科,北京市100020

出　　处：《中国组织工程研究与临床康复》2010年第48期8941-8944,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

摘　　要：背景：人工全膝关节置换所选假体的形状、尺寸是否与膝关节相匹配,将明显影响手术及术后长期效果。由于缺少对国人体质参数的研究,中国关节外科领域缺少国人膝关节特性数据和国产化膝关节假体。目的：获得国人正常胫骨近端不同截骨高度线性参数正常参考值。方法：选取82例/135膝（男85膝,女50膝）国人正常膝关节,年龄19~82岁,平均47.2岁;利用原始CT扫描图像资料重建膝关节,并在工作平台上以一定后倾角度对胫骨进行旋转、切割,测量不同截骨高度各截面的相关线性参数。结果与结论：测得所有受试者胫骨各截面的前后径平均值为（48.41±3.41）mm,横径平均值为（75.03±4.88）mm,前后径与横径的比值平均为0.655±0.032;前后径、横径在不同性别间差异存在显著性义（P〈0.01）,前后径在不同截骨高度差异存在显著性意义（P〈0.01）。结果说明在设计国人膝关节假体应该注意到性别及截骨高度的差异。BACKGROUND：he matching degree of shape and dimension of the total knee arthroplasty prosthesis to the knee joint significantly affects the operative and postoperative effects.There are few researches the Chinese proximal tibia parameters,so it is necessary to explore the characteristic data and domestic prosthesis.OBJECTIVE：To obtain the normal linear parameters on the different resection levels of normal proximal tibia in Chinese.METHODS：A total of 82 normal people/135 knees,including 85 knees of males and 50 females,with an average age of 47.2 years（range from 19 to 82 year）,were selected.Original CT image data were utilized to set up the three-dimensional model of Chinese normal knees and measure the related linear parameters of proximal tibia section on the work station.RESULTS AND CONCLUSION：The average anterior-posterior（AP）and medial-lateral（ML）lengths of the proximal tibia section were（48.41±3.41）and（75.03±4.88）mm,respectively;the average ratio of AP and ML（RAP/ML）was（0.655±0.032）.AP and ML showed statistical significances among different genders and different osteotomy height（P 0.01）.Therefore,the characteristics and the gender difference should be considered when we design the tibial plateau prosthesis.

关 键 词：胫骨 放射测量术 三维成像 人工假体 全膝关节置换 

分 类 号：R318[医药卫生—生物医学工程]